diff --git a/subr/pkg_install.subr b/subr/pkg_install.subr
index 7394fc6..dd007ab 100644
--- a/subr/pkg_install.subr
+++ b/subr/pkg_install.subr
@@ -3,7 +3,6 @@
 #
 
 pkg_install() {
-	local _pkg_version_rpm="";
 	ex_rtl_fileop mkdir "${PKG_PREFIX}";
 	find "${PKG_DESTDIR}"				\
 		-type d -exec chmod 0755 {} \;;
@@ -18,42 +17,6 @@ pkg_install() {
 		tar -C "${PKG_DESTDIR}" -cpf - .	|\
 			gzip -c -9 - > "${PKG_BASE_DIR}/${PKG_NAME}.tgz"
 	fi;
-	if [ "${ARG_RPM:-0}" -eq 1 ]\
-	&& [ -x "$(which rpmbuild 2>/dev/null)" ]; then
-		_pkg_version_rpm="${PKG_VERSION:-Unknown}";
-		_pkg_version_rpm="${_pkg_version_rpm%%-*}";
-		cat > "${PKG_BASE_DIR}/${PKG_NAME}-${_pkg_version_rpm}.spec" <<EOF
-Name:           ${PKG_NAME}
-Version:        ${_pkg_version_rpm}
-Release:        1
-Summary:        ${PKG_NAME} ${PKG_VERSION:-Unknown}
-License:        Unknown
-Group:          Applications
-Url:            ${PKG_URL:-${PKG_URLS_GIT:-Unknown}}
-
-%description
-${PKG_NAME} ${PKG_VERSION:-Unknown}
-
-%prep
-%build
-%install
-rm -rf "\${RPM_BUILD_ROOT}"
-mkdir -p "\${RPM_BUILD_ROOT}"
-cp -pPr "${PKG_DESTDIR}/." "\${RPM_BUILD_ROOT}"
-
-%post
-%postun
-%files
-/
-
-%changelog
-
-EOF
-		rpmbuild -bb --define="_topdir ${PREFIX_RPM}/${PKG_NAME}-${_pkg_version_rpm}" --nodeps "${PKG_BASE_DIR}/${PKG_NAME}-${_pkg_version_rpm}.spec";
-		find "${PREFIX_RPM}/${PKG_NAME}-${_pkg_version_rpm}/RPMS" -iname \*.rpm -exec cp -pP {} "${PREFIX_RPM}/" \;;
-		ex_rtl_fileop rm "${PREFIX_RPM}/${PKG_NAME}-${_pkg_version_rpm}";
-		ex_rtl_fileop cp "${PKG_BASE_DIR}/${PKG_NAME}-${_pkg_version_rpm}.spec" "${PREFIX_RPM}/";
-	fi;
 };
 
 # vim:filetype=sh
diff --git a/subr/pkg_install_rpm.subr b/subr/pkg_install_rpm.subr
new file mode 100644
index 0000000..d9931fb
--- /dev/null
+++ b/subr/pkg_install_rpm.subr
@@ -0,0 +1,61 @@
+#
+# set -o errexit -o noglob are assumed.
+#
+
+pkg_install_rpm() {
+	local _pkg_url="" _pkg_version_full="" _pkg_version_rpm="";
+	if [ "${ARG_RPM:-0}" -eq 0 ]\
+	|| ! [ -x "$(which rpmbuild 2>/dev/null)" ]; then
+		return 0;
+	fi; 
+	if [ -n "${PKG_URLS_GIT}" ]; then
+		_pkg_version_rpm="$(cd "${PKG_BASE_DIR}/${PKG_SUBDIR}" && git rev-parse HEAD)";
+		_pkg_version_full="${_pkg_version_rpm} ($(cd "${PKG_BASE_DIR}/${PKG_SUBDIR}" && git rev-parse --abbrev-ref HEAD))";
+		_pkg_url="${PKG_URLS_GIT%% *}";
+		_pkg_url="${_pkg_url##*=}"; _pkg_url="${_pkg_url%%@*}";
+		if [ "${_pkg_url#${DEFAULT_GITROOT_HEAD}}" != "${_pkg_url}" ]; then
+			_pkg_url="Unknown";
+		fi;
+	elif [ -n "${PKG_VERSION}" ]; then
+		_pkg_version_rpm="${PKG_VERSION%%-*}";
+		_pkg_version_full="${PKG_VERSION}";
+		_pkg_url="${PKG_URL}";
+	else
+		_pkg_version_rpm="${PKG_VERSION}";
+		_pkg_version_full="${PKG_VERSION}";
+		_pkg_url="${PKG_URL}";
+	fi;
+	cat > "${PKG_BASE_DIR}/${PKG_NAME}-${_pkg_version_rpm}.spec" <<EOF
+Name:           ${PKG_NAME}
+Version:        ${_pkg_version_rpm}
+Release:        1
+Summary:        ${PKG_NAME} ${_pkg_version_full}
+License:        Unknown
+Group:          Applications
+Url:            ${_pkg_url}
+
+%description
+${PKG_NAME} ${_pkg_version_full}
+
+%prep
+%build
+%install
+rm -rf "\${RPM_BUILD_ROOT}"
+mkdir -p "\${RPM_BUILD_ROOT}"
+cp -pPr "${PKG_DESTDIR}/." "\${RPM_BUILD_ROOT}"
+
+%post
+%postun
+%files
+/
+
+%changelog
+
+EOF
+	rpmbuild -bb --define="_topdir ${PREFIX_RPM}/${PKG_NAME}-${_pkg_version_rpm}" --nodeps "${PKG_BASE_DIR}/${PKG_NAME}-${_pkg_version_rpm}.spec";
+	find "${PREFIX_RPM}/${PKG_NAME}-${_pkg_version_rpm}/RPMS" -iname \*.rpm -exec cp -pP {} "${PREFIX_RPM}/" \;;
+	ex_rtl_fileop rm "${PREFIX_RPM}/${PKG_NAME}-${_pkg_version_rpm}";
+	ex_rtl_fileop cp "${PKG_BASE_DIR}/${PKG_NAME}-${_pkg_version_rpm}.spec" "${PREFIX_RPM}/";
+};
+
+# vim:filetype=sh
diff --git a/vars/env.vars b/vars/env.vars
index 004691c..785783d 100644
--- a/vars/env.vars
+++ b/vars/env.vars
@@ -3,7 +3,7 @@ DEFAULT_BUILD_STEPS="
 	configure_patch_pre configure_autotools configure_patch configure			\
 	build											\
 	install_subdirs install_make install_files install_libs					\
-	install_pkgconfig install_purge_la install_strip install clean";
+	install_pkgconfig install_purge_la install_strip install install_rpm clean";
 DEFAULT_BUILD_VARS="
 	AR BASE_DIR BUILD_DIR BUILD_STEPS_DISABLE BUILD_TYPE CC					\
 	CFLAGS_BUILD_EXTRA CFLAGS_CONFIGURE CFLAGS_CONFIGURE_EXTRA				\